Why is My Cat Drooling?
Cats are known for their meticulous grooming habits, so it can be surprising when you notice your cat drooling. While occasional drooling in cats can be normal, excessive or sudden drooling may be a sign of an underlying health issue. At LePar Animal Hospital in Evergreen Park, we’re here to help you understand what might be causing your cat’s drooling and when it’s time to bring them in for an exam. Read on to learn more about the potential reasons behind excessive drooling and what steps you should take to ensure your feline friend stays happy and healthy.

Common Causes for Cat Drooling
Drooling in cats can stem from a variety of factors, ranging from completely harmless to medically significant. Here are some of the most common reasons your cat may be drooling:
Normal Drooling from Contentment
Some cats drool when they are especially relaxed or happy. If your cat drools while purring, kneading, or snuggling, it may simply be a sign of deep relaxation. This type of drooling is typically intermittent and not a cause for concern. However, if drooling occurs suddenly or becomes excessive, it’s worth investigating further.
Dental Disease and Oral Health Issues
One of the most common reasons for excessive drooling in cats is dental disease. Conditions such as gingivitis, periodontitis, and tooth abscesses can cause pain and discomfort, leading to drooling. Signs of dental problems include:
- Bad breath
- Difficulty eating or dropping food
- Red, swollen, or bleeding gums
- Pawing at the mouth
If you suspect your cat’s drooling is related to oral health issues, schedule a veterinary dental exam as soon as possible.
Nausea or Gastrointestinal Issues
Cats that feel nauseous may start to drool excessively. Nausea can be caused by a variety of issues, including dietary indiscretion, ingestion of toxic substances, or underlying health conditions like kidney disease or liver problems. Other signs of nausea in cats include:
- Lethargy
- Vomiting
- Loss of appetite
Exposure to Toxins or Poisonous Plants
Certain household substances, plants, and chemicals can be toxic to cats and cause excessive drooling. Common culprits include:
- Household cleaners and detergents
- Certain houseplants, such as lilies and philodendrons
- Medications that are toxic to cats
- Insecticides and pesticides
If you suspect your cat has ingested a toxic substance, immediate veterinary attention is necessary. Call LePar Animal Hospital at (708) 423-3200 for emergency guidance.
When Drooling Indicates a Serious Health Issue
While occasional drooling may be harmless, persistent or excessive drooling can indicate a serious health concern. Here are some medical conditions that can cause drooling in cats:
Oral Tumors or Growths
Oral tumors, cysts, or abnormal growths inside a cat’s mouth can lead to excessive drooling. These growths may cause discomfort, interfere with eating, and even result in difficulty swallowing. If your cat’s drooling is persistent and you notice lumps in their mouth, a veterinary visit is essential for proper diagnosis and treatment.
Upper Respiratory Infections
Cats suffering from respiratory infections often develop inflamed gums, ulcers in the mouth, and excessive saliva production. These infections can be caused by viral or bacterial agents and are usually accompanied by symptoms such as:
- Sneezing and nasal discharge
- Congestion or difficulty breathing
- Fever or lethargy
- Reduced appetite
Heatstroke or Stress-Induced Drooling
Cats exposed to extreme heat or stressful situations may begin to drool excessively. Heatstroke is a serious condition that requires immediate medical attention and is often accompanied by:
- Panting
- Weakness or collapse
- Vomiting
If your cat is drooling and has been in a hot environment, seek veterinary care right away to prevent life-threatening complications.
How a LePar Animal Hospital Can Help
If your cat’s drooling seems excessive, unusual, or is accompanied by other symptoms, a veterinary examination is the best course of action. At LePar Animal Hospital, our team can assess your cat’s oral health, perform diagnostic tests, and determine the best treatment plan to address the underlying cause of their drooling. Treatment options vary depending on the cause and may include:
- Dental cleanings and extractions for oral disease
- Medication for infections or nausea
- Removal of foreign objects or toxic substances
- Supportive care for stress-related drooling
Understanding why your cat is drooling can help you determine whether it’s a harmless behavior or a sign of something more serious. While occasional drooling from relaxation is normal, persistent drooling often indicates a health concern that requires veterinary attention. By staying attentive to your cat’s health and seeking prompt veterinary care when needed, you can help ensure they remain happy and comfortable. If you have any concerns about your cat’s drooling, contact LePar Animal Hospital at (708) 423-3200 or book an appointment online today!
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LePar Animal Hospital has served generations of pets and families in Evergreen Park, Oak Lawn, Palos, and neighboring suburbs, and we hope to serve generations more! Our animal hospital is accredited by the American Animal Hospital Association (AAHA) and staffed with Fear Free Certified veterinarians providing a multitude of services, from wellness and dental care to acupuncture, chemotherapy, and surgery.